2 * OF-platform PATA driver
4 * Copyright (c) 2007 MontaVista Software, Inc.
5 * Anton Vorontsov <avorontsov@ru.mvista.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License (Version 2) as
9 * published by the Free Software Foundation.
12 #include <linux/kernel.h>
13 #include <linux/module.h>
14 #include <linux/of_address.h>
15 #include <linux/platform_device.h>
16 #include <linux/ata_platform.h>
17 #include <linux/libata.h>
19 #define DRV_NAME "pata_of_platform"
21 static struct scsi_host_template pata_platform_sht = {
22 ATA_PIO_SHT(DRV_NAME),
25 static int pata_of_platform_probe(struct platform_device *ofdev)
28 struct device_node *dn = ofdev->dev.of_node;
29 struct resource io_res;
30 struct resource ctl_res;
31 struct resource *irq_res;
32 unsigned int reg_shift = 0;
37 ret = of_address_to_resource(dn, 0, &io_res);
39 dev_err(&ofdev->dev, "can't get IO address from "
44 ret = of_address_to_resource(dn, 1, &ctl_res);
46 dev_err(&ofdev->dev, "can't get CTL address from "
51 irq_res = platform_get_resource(ofdev, IORESOURCE_IRQ, 0);
53 of_property_read_u32(dn, "reg-shift", ®_shift);
55 if (!of_property_read_u32(dn, "pio-mode", &pio_mode)) {
57 dev_err(&ofdev->dev, "invalid pio-mode\n");
61 dev_info(&ofdev->dev, "pio-mode unspecified, assuming PIO0\n");
64 use16bit = of_property_read_bool(dn, "ata-generic,use16bit");
66 pio_mask = 1 << pio_mode;
67 pio_mask |= (1 << pio_mode) - 1;
69 return __pata_platform_probe(&ofdev->dev, &io_res, &ctl_res, irq_res,
70 reg_shift, pio_mask, &pata_platform_sht,
74 static const struct of_device_id pata_of_platform_match[] = {
75 { .compatible = "ata-generic", },
78 MODULE_DEVICE_TABLE(of, pata_of_platform_match);
80 static struct platform_driver pata_of_platform_driver = {
83 .of_match_table = pata_of_platform_match,
85 .probe = pata_of_platform_probe,
86 .remove = ata_platform_remove_one,
89 module_platform_driver(pata_of_platform_driver);
91 MODULE_DESCRIPTION("OF-platform PATA driver");
92 MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
93 MODULE_LICENSE("GPL");